_pv_alloc
#define pv_alloc(pmap, pindex, isnewp) _pv_alloc(pmap, pindex, isnewp \
#define pv_alloc(pmap, pindex, isnewp) _pv_alloc(pmap, pindex, isnewp)
static pv_entry_t _pv_alloc(pmap_t pmap, vm_pindex_t pindex, int *isnew